Vanadium mined at the Maracás Menchen operation in Bahia, Brazil — one of the largest mines of its kind — is being positioned as a strategic input for vanadium flow batteries (VFBs), the long-duration storage technology that holds energy in liquid electrolyte for hours rather than minutes.
Data centres create a new demand front
The domestic market case rests on Brazil's rapidly expanding data centre footprint. Consultancy JLL expects Brazil's data centre market to double in size by 2030. The country closed the first half of the year with 706 MW of installed capacity — more than six times the 2012 level — on a 15% compound annual growth rate.
That expansion requires more investment in generation, transmission and energy reserve infrastructure, creating a new demand front for vanadium-based storage. Flow batteries are described as especially suited to industrial users, power grids and data centres that need continuous power, because liquid vanadium solutions circulated between tanks and electrochemical cells can store large amounts of energy with greater durability and lower fire risk than conventional lithium-ion systems.
From mine to electrolyte
Largo is moving downstream to capture that value. In 2025 the Canadian miner partnered with US-based Stryten Energy to form Storion Energy, focused on developing components and electrolytes for vanadium flow batteries.
Largo co-CEO Alberto Arias expects energy storage demand to grow substantially in the United States, expanding the market for Brazilian vanadium.
Washington is already a customer. In July, Largo received US$60.1 million from the US Defense Logistics Agency to supply high-purity vanadium pentoxide, with deliveries scheduled through January 2030. The award reinforces vanadium's role in US national and technological security and reflects Western efforts to reduce dependence on Asian and European suppliers, particularly China and Russia.
The policy ask
Arias has called for vanadium to be recognised in critical minerals policies — a status that would unlock the kind of financing, offtake support and permitting priority that lithium and rare earths have attracted in several jurisdictions.
Bahia's position in that supply chain is notable: the state leads Brazilian production of vanadium and uranium and accounts for 47 of the 93 mineral types found in Brazil. For LDES developers watching electrolyte availability and price, the question is whether Brazilian mine output converts into battery-grade electrolyte capacity fast enough to serve both domestic grid needs and US storage demand.
This article was assisted by AI analysis. Please refer to the original source for official information.